I've run into a strange situation today with the application I'm working
on. We're using tapestry 3.0.2 and cayenne-1.1. The problem is that a
data object becomes hollow while I'm passing it around, and the
workaround I'm having to use to refetch it is very ugly for our system.
Here's what happens:
1) The tapestry engine renders a page that displays a series of direct
links in a contrib.table (this is a bit like a WOTable but heavier).
2) During the render of that table, I put a DirectLink into each row.
Each directlink has a parameter array associated with it, and that
parameter array contains an entity.
3) When the user clicks on the link, tapestry calls a method that tries
to extract the parameter. The DataObject has become hollow.
Strangely, this system worked as I'd expected earlier today. The hollow
obstacle came up as I worked on the page. I'm not sure what I changed in
the meantime..
What are the rules about how dataobjects become hollow, and is there a
way of me preventing it from happening?
- C
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